<template>
  <div>
    <!--  面包屑导航区域  -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--  卡片区域  -->
    <el-card>
      <!-- 2.为Echarts准备一个具备宽高的Dom -->
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
  //1.导入echarts
  import * as echarts from 'echarts'
  import _ from 'lodash'
  export default {
    name: "Report",
    data(){
      return {
        //需要合并的数据
        option : {
          title: {
            text: 'ECharts 入门示例'
          },
          tooltip: {},
          legend: {
            data:['销量']
          },
          xAxis: {
            data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
          },
          yAxis: {},
          series: [{
            name: '销量',
            type: 'bar',
            data: [5, 20, 36, 10, 10, 20]
          }]
        },
      }
    },
    //此时页面上的元素已经被渲染完成了
    async mounted() {
      // 3.基于准备好的dom，初始化echarts实例
      let myChart = echarts.init(document.getElementById('main'));

      const {data:res} = await this.$http.get('reports/type/1')
      if(res.meta.status !== 200){
        return this.$message.error("获取数据失败")
      }


      //4.准备数据和配置项
       const result = _.merge(res.data,this.option) //合并对象
      //5.使用刚指定的配置项和数据显示图表。
      myChart.setOption(result);
    }
  }
</script>

<style scoped>

</style>